/****************************************************************************
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** This file is part of the demonstration applications of the Qt Toolkit.
**
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/

#ifndef QxMainWindow_HPP
#define QxMainWindow_HPP

#include <QtGui>
#include <QPixmap>

class QxDemoTextItem;
class QxImageItem;

class QxMainWindow : public QGraphicsView
{
  Q_OBJECT

public:

  QxMainWindow( QWidget* parent=0 );
  ~QxMainWindow();
  void enableMask( bool enable );
  void toggleFullscreen();
  int performBenchmark();
  void switchTimerOnOff( bool on );
  void start();

  QGraphicsScene* scene;
  QGraphicsWidget* mainSceneRoot;

  bool loop;

  // FPS stuff:
  QList<QTime> frameTimeList;
  QList<float> fpsHistory;
  float currentFps;
  float fpsMedian;
  QxDemoTextItem* fpsLabel;

protected:

  // Overridden methods:
  void showEvent( QShowEvent* event );
  void keyPressEvent( QKeyEvent* event );
  void resizeEvent( QResizeEvent* event );
  void drawBackground( QPainter* painter, const QRectF& rect );
  void drawItems( QPainter* painter, int numItems, QGraphicsItem** items, const QStyleOptionGraphicsItem* options );
  void focusInEvent( QFocusEvent* event);
  void focusOutEvent( QFocusEvent* event);

private slots:

  void tick();

private:

  void setupWidget();
  void setupSceneItems();
  void drawBackgroundToPixmap();
  void setupScene();
  bool measureFps();
  void forceFpsMedianCalculation();
  void checkAdapt();
  void setRenderingSystem();

  QTimer          updateTimer;
  QTime           demoStartTime;
  QTime           fpsTime;
  QPixmap         background;
  QxImageItem*    companyLogo;
  QxImageItem*    qtLogo;
  bool            doneAdapt;
  bool            useTimer;
  QxDemoTextItem* pausedLabel;
};

#endif // QxMainWindow_HPP
